Drilldown: tool

Kofi (1) · Mattermost (1)

free tip jar with optional shop (1) · open-source Slack alternative with self-hosted free tier (1)

https (2)

jitsi.org · proton.me/meet · akaunting.com · bitwarden.com · btcpayserver.org · buymeacoffee.com · chuffed.org · civicrm.org · clickup.com · digitalocean.com · element.io · eventbrite.com · github.com/doikayt/qwiki · gocardless.com · gofundme.com · ivpn.net · ko-fi.com · mattermost.com · miraheze.org · montastic.com · mullvad.net · nextcloud.com · nextcloud.com/calendar · onlyoffice.com · opencollective.com · patreon.com · proton.me/mail · protonvpn.com · rocket.chat · signal.org · slack.com · torproject.org · wireguard.com · wordsofjustice.org · workspace.google.com · zeffy.com · zoom.us · Other · None

free (1) · varies (1)

None (1) · Professional $10/user/mo; Enterprise custom pricing (self-hosted free tier available) (1)

closed (1) · open (1)

cloud (1) · hybrid (1)

Free tip-jar platform with the lowest baseline fees of the group -- 0% on simple one-time tips -- plus optional shop/membership features. No nonprofit registration or business entity is required to sign up. (1) · Self-hostable, MIT-licensed team chat closely modeled on Slack's channel-based UX -- includes a Slack export/import path to ease migration. Free self-hosted tier runs indefinitely with no per-seat licensing cost; paid tiers add SSO, compliance exports, and HIPAA/FedRAMP-aligned deployment options. (1)

None · Choose the region closest to your primary users to minimize latency. Enable automatic backups ($1.20/month at the entry tier) from the start — restoring from a snapshot is far easier than rebuilding from scratch. · Even the self-hosted install requires an API key that calls home to Akaunting's servers to validate your license tier -- worth knowing if full data sovereignty (no external dependency at all) is a hard requirement, since this isn't quite that despite being open source. · Explore active campaigns from the Campaigns tab. Mobile apps available on iOS (App Store) and Android (Google Play). · Fewer native integrations than Slack out of the box -- most third-party connections go through incoming/outgoing webhooks rather than a marketplace, so budget some setup time. Good fit for teams that want a near drop-in Slack replacement and value Go-based, ops-friendly self-hosting. · Has the most GitHub momentum of the self-hosted Slack alternatives (~45k stars). The free Community edition covers most day-to-day needs; exceeding Starter-plan limits blocks adding new users but does not lock you out of existing data. · Registration: no nonprofit status or business registration required -- sign up and start collecting tips/memberships as an individual or org account. · Registration: no nonprofit status or business registration required to sign up. · See https://www.mediawiki.org/wiki/Miraheze for an overview of available extensions and account setup. No cost, donation-supported; account required to create a new wiki. · See the repo README for local setup and deployment instructions. · Syncs with any CalDAV-compatible client (Thunderbird, most phone calendar apps) so people aren't locked into a web UI. · The free plan supports up to 20 email alert recipients — sufficient for most small organizations. Webhook triggers allow integration with custom scripts or chat tools on status changes. · Use Board view for kanban-style tracking across teams. Guest access is available on paid plans for external collaborators. · Zero-access encryption means Proton cannot read message content or hand it over even under legal request -- worth flagging for teams handling sensitive organizing communications. No self-hosting option; mail is hosted on Proton's own infrastructure in Switzerland. · Other

None (2)

Fund Raising (1) · Team Collaboration (1)